On iOS Safari with Noir (dark mode plugin) said it detected a native dark mode and therefore ignored the page, but your site is not actually in dark mode. Overriding that, the site inverts properly.

Not sure if that's a deficieny in Noir or your site.

And (that's typical for modern landing pages) there's quite a lot of vertical whitespace. But I'm from the dense display usage crowd, so take this with a grain of salt.